2-{3-[4-(3-Bromophenyl)piperazin-1-yl]propyl}-[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride; 2-[3-[4-(3-bromophenyl)piperazin-1-yl]propyl]-[1,2,4]triazolo[4,3-a]pyridin-3-one hydrochloride; Trazodone Impurity D; Trazodone Hydrochloride Impurity D; Trazodone Related Compound D as Hydrochloride; Trazodone Hydrochloride Imp. D (BP) as Hydrochloride; Trazodone USP Related compound D; Trazodone BP Impurity D HCl; Trazodone USP RC D HCl; Trazodone Bromo Analog HCl; Trazodone Impurity D HCl; Trazodone EP Impurity D